Allentown, PA 18104 Monthly Weather

Lehigh County6:33 PM EDT40.60°N, 75.52°W
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October 2026

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180°/59°<0.01 inAvg 71°/49°
284°/58°<0.01 inAvg 71°/49°
372°/50°<0.01 inAvg 71°/49°
461°/51°<0.01 inAvg 70°/48°
570°/49°Avg 70°/48°
662°/41°Avg 69°/47°
769°/36°Avg 69°/47°
875°/46°Avg 68°/47°
972°/41°Avg 68°/46°
1071°/40°Avg 68°/46°
1158°/54°1.70 inAvg 67°/46°
1273°/54°Avg 67°/45°
1378°/48°Avg 67°/45°
1479°/59°<0.01 inAvg 66°/44°
1568°/48°Avg 66°/44°
1675°/56°0.25 inAvg 65°/44°
1756°/34°Avg 65°/43°
1860°/31°Avg 65°/43°
1969°/32°Avg 64°/43°
2070°/37°Avg 64°/42°
2166°/34°Avg 64°/42°
22 Sunny 66°/39°Avg 63°/42°
23 Sunny 60°/31°Avg 63°/41°
24 Widespread Frost then Sunny 62°/33°Avg 62°/41°
25 Areas Of Frost then Sunny 65°/36°Avg 62°/41°
26 Sunny 69°/43°Avg 62°/40°
27 Mostly Sunny 66°/42°Avg 61°/40°
28 Partly Sunny 63°/43°Avg 61°/40°
29 Cloudy 66°/42°Avg 61°/39°
30 Sunny 56°/38°Avg 60°/39°
31 Sunny 56°/33°Avg 60°/39°
Average high70° (normal 67°)
Average low46° (normal 46°)
Warmest / coldest84° / 31°
Precipitation1.96 in (normal 3.00 in to date)
Record high today84° (1979)
Record low today21° (1940)

Observed: Allentown Area, 8 km away, records since 1922. Normals 1991–2020. Climate data from NOAA's Regional Climate Centers (ACIS); recent days are preliminary. Days ahead: the forecast.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.